Hello.
When we are factoring squared binomials, there’s a pretty simple technique to solving for these.
First, square root the first term (x^2). We get x. Now, let’s square root our second term (100), which we get 10.
Put our square-rooted terms into parenthesis; (x + 10)
Since we have a negative sign before 100, we need to add a second parenthesis with the same terms, but 10 now needs to be negative; (x - 10)
Put these two parenthesis next to eachother, and now we have our answer, as we cannot simplify it anymore;
(x - 10)(x + 10)
I hope this helps!
